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package org.jboss.resteasy.core;

import org.jboss.resteasy.spi.HttpRequest;
import org.jboss.resteasy.spi.HttpResponse;
import org.jboss.resteasy.spi.ResteasyProviderFactory;
import org.jboss.resteasy.util.Encode;

import javax.ws.rs.FormParam;
import java.lang.annotation.Annotation;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Type;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

/**
 * @author Bill Burke
 * @version $Revision: 1 $
 */
public class FormParamInjector extends StringParameterInjector implements ValueInjector
{
   private boolean encode;
   
   public FormParamInjector(Class type, Type genericType, AccessibleObject target, String header, String defaultValue, boolean encode, Annotation[] annotations, ResteasyProviderFactory factory)
   {
      super(type, genericType, header, FormParam.class, defaultValue, target, annotations, factory);
      this.encode = encode;
   }

   public Object inject(HttpRequest request, HttpResponse response)
   {
      List list = request.getDecodedFormParameters().get(paramName);
      if (list == null)
      {
         extractValues(null);
      }
      else if (encode)
      {
         List encodedList = new ArrayList();
         for (String s : list)
         {
            encodedList.add(URLEncoder.encode(s));
         }
         list = encodedList;
      }
      return extractValues(list);
   }

   public Object inject()
   {
      throw new RuntimeException("It is illegal to inject a @FormParam into a singleton");
   }
}